GERD & Hiatus Hernia

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Esophagus — Topics

GERD & HIATUS HERNIA

NEET SS Surgery — High-Yield Revision Notes
GERD Reflux disease
4 Types Hiatus hernia
LES Antireflux barrier
HH Repair Surgical treatment
1

Quick Revision — MUST KNOW

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  • GERD is reflux of gastric contents into the esophagus producing troublesome symptoms and/or complications.
  • The main antireflux barrier consists of the LES, crural diaphragm, intra-abdominal esophagus and angle of His.
  • Transient LES relaxations are an important physiological mechanism underlying reflux episodes.
  • Hiatal hernia disrupts the normal relationship between the GE junction and diaphragmatic hiatus.
  • Hiatal hernia is classified into Types I, II, III and IV.
  • Type I = sliding hiatal hernia.
  • Types II–IV are paraesophageal hernias.
  • GERD may be managed with lifestyle measures, acid suppression and, in selected patients, antireflux surgery.
  • Surgical treatment generally involves restoration of the antireflux barrier, often with hiatal repair and fundoplication.
NEET SS Pearl: Think of GERD as a failure of the antireflux barrier, not simply as "excess acid".
2

Antireflux Barrier

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Component Role
LES Physiological high-pressure zone preventing reflux
Crural diaphragm External diaphragmatic component of the antireflux barrier
Intra-abdominal esophagus Positive intra-abdominal pressure helps maintain closure
Angle of His Contributes to the geometry of the gastroesophageal junction
Phrenoesophageal membrane Helps anchor the GE junction at the diaphragmatic hiatus
Exam Pearl: The LES and crural diaphragm function together as an important component of the antireflux barrier.
3

Pathophysiology of GERD

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  • Increased frequency of transient LES relaxations.
  • Reduced LES pressure or impaired antireflux barrier.
  • Hiatal hernia can impair the normal GE junction–diaphragm relationship.
  • Impaired esophageal clearance can increase mucosal exposure to refluxate.
  • Delayed gastric emptying may contribute in selected patients.
  • Refluxate may contain acid, pepsin, bile and other gastric contents.
Important: GERD is a multifactorial disorder involving the antireflux barrier, reflux events and esophageal clearance.
4

Hiatus Hernia — Definition & Classification

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A hiatal hernia occurs when abdominal contents, typically part of the stomach, protrude through the esophageal hiatus of the diaphragm.

Type I — Sliding Hiatal Hernia
GE junction migrates above the diaphragmatic hiatus.
Type II — True Paraesophageal Hernia
Gastric fundus herniates beside the esophagus while the GE junction remains in its normal position.
Type III — Mixed
Both the GE junction and stomach herniate through the hiatus.
Type IV
A large hernia containing the stomach plus another abdominal organ.
NEET SS Pearl: Type I = sliding. Types II–IV are paraesophageal patterns.
5

Clinical Features of GERD

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Typical Symptoms

  • Heartburn
  • Acid regurgitation
  • Retrosternal discomfort
  • Symptoms after meals

Extraesophageal Associations

  • Chronic cough
  • Hoarseness
  • Throat symptoms
  • Asthma association
Clinical Point: Extraesophageal symptoms are nonspecific and should not automatically be attributed to GERD without appropriate evaluation.
6

Alarm Features — When to Investigate

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  • Dysphagia
  • Odynophagia
  • Gastrointestinal bleeding
  • Unintentional weight loss
  • Persistent vomiting
  • Anemia or suspected gastrointestinal blood loss
NEET SS Pearl: Dysphagia in a patient with presumed GERD should raise concern for structural disease, including stricture or malignancy.
7

Diagnosis & Investigations

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Investigation Major role
Upper GI endoscopy Evaluate mucosal injury, erosive esophagitis, Barrett's esophagus, stricture and malignancy.
Ambulatory pH monitoring Objective assessment of pathological acid exposure.
pH-impedance monitoring Detects acid and non-acid reflux and allows symptom association.
High-resolution manometry Evaluates esophageal motility and LES function; important before selected antireflux operations.
Barium swallow Useful for structural assessment, hiatal hernia, strictures and selected postoperative problems.
Exam Pearl: Endoscopy assesses mucosal disease; reflux monitoring provides objective evidence of reflux when the diagnosis remains uncertain.
8

Medical Management of GERD

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  • Lifestyle modification should be individualized.
  • Weight reduction is important in patients with overweight or obesity.
  • Avoidance of meals close to bedtime can be useful in patients with nocturnal symptoms.
  • Proton pump inhibitors (PPIs) are the main pharmacological treatment for acid-mediated GERD.
  • H2-receptor antagonists may have a role in selected patients.
  • Treatment should be tailored to symptom response, objective findings and complications.
Exam Concept: Medical therapy reduces acid exposure; it does not anatomically reconstruct a defective gastroesophageal junction.
9

When to Consider Antireflux Surgery

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  • Objective evidence of GERD with appropriate surgical anatomy.
  • Persistent troublesome reflux despite appropriate medical management.
  • Patients who are unable or unwilling to continue long-term medical therapy after appropriate evaluation.
  • GERD with significant hiatal hernia may require correction of the mechanical defect.
  • Severe reflux complications may influence the decision for definitive intervention.
NEET SS Pearl: Before antireflux surgery, establish that the symptoms are actually caused by GERD and assess esophageal motility and the anatomy of the GE junction.
10

Surgical Treatment of Hiatus Hernia

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Surgical repair aims to restore the anatomy of the gastroesophageal junction and reduce the herniated stomach or other abdominal contents.

  • Reduction of herniated contents.
  • Mobilization of the esophagus and stomach as required.
  • Hiatal closure to restore the diaphragmatic hiatus.
  • Fundoplication may be added to restore the antireflux barrier.
  • Gastropexy may have a role in selected clinical situations.
Current guideline point: SAGES suggests that patients undergoing repair of Type II, III or IV hiatal hernia may benefit from fundoplication, although the certainty of evidence is low.
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Mesh in Hiatal Hernia Repair

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  • Mesh has been studied as an adjunct to hiatal closure, particularly in larger hernias.
  • Evidence regarding routine mesh use remains uncertain.
  • Potential benefits must be balanced against mesh-related complications.
  • Mesh choice and placement should be individualized according to anatomy, tissue quality and surgeon experience.
NEET SS / Current Guideline Pearl: SAGES did not make an evidence-based recommendation for or against routine mesh use because available evidence remains equivocal.
12

Fundoplication

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Procedure Basic concept
Nissen Complete 360° fundoplication.
Toupet Posterior partial fundoplication.
Dor Anterior partial fundoplication.
Important: Complete and partial fundoplication both have established roles. Choice should take into account symptoms, motility, anatomy and risk of postoperative dysphagia.
13

Complications of Antireflux Surgery

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  • Postoperative dysphagia
  • Gas-bloat syndrome
  • Inability to belch or vomit
  • Recurrent reflux
  • Wrap migration or disruption
  • Recurrent hiatal hernia
  • Slipped or misplaced wrap
Exam Pearl: Persistent postoperative dysphagia should prompt evaluation for mechanical obstruction, tight wrap, recurrent anatomy or an underlying motility disorder.
14

Paraesophageal Hernia — Clinical Features

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  • May be asymptomatic and discovered incidentally.
  • Can cause dysphagia and postprandial discomfort.
  • Early satiety may occur.
  • Reflux symptoms may coexist.
  • Large hernias can produce respiratory symptoms through thoracic compression.
  • Complications include obstruction, incarceration, strangulation and gastric volvulus.
Clinical Pearl: Acute severe symptoms in a large paraesophageal hernia should raise concern for obstruction, ischemia or gastric volvulus.
15

Hiatal Hernia — NEET SS Comparison

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Type GE Junction Stomach Key Point
I Above hiatus Usually slides upward Sliding hernia
II Normal position Fundus herniates True paraesophageal
III Above hiatus Herniates Mixed type
IV Usually displaced Stomach + another organ Complex paraesophageal hernia
16

NEET SS — Facts You Should Never Miss

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  • GERD results from failure of the antireflux barrier.
  • LES is a major component of the antireflux barrier.
  • Crural diaphragm contributes to the gastroesophageal antireflux mechanism.
  • Transient LES relaxations are an important mechanism of reflux.
  • Type I hiatal hernia = sliding hernia.
  • Type II = true paraesophageal hernia.
  • Type III = mixed sliding + paraesophageal component.
  • Type IV = stomach plus another abdominal organ herniates.
  • Endoscopy evaluates mucosal disease and complications.
  • Reflux monitoring provides objective evidence when GERD remains uncertain.
  • Manometry is important when evaluating esophageal motility and before selected antireflux operations.
  • Hiatal hernia repair restores the anatomy of the GE junction and diaphragmatic hiatus.
  • Fundoplication may be added to restore the antireflux barrier.
  • Current evidence does not support a universal recommendation for routine mesh use in hiatal hernia repair.
17

NEET SS Clinical Approach

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GERD + Typical Symptoms

Assess symptoms, alarm features, response to treatment and need for objective testing.

GERD + Dysphagia

Think structural disease or motility disorder and investigate appropriately.

GERD + Large Hiatal Hernia

Evaluate the anatomy and consider whether definitive mechanical correction is appropriate.

Paraesophageal Hernia + Acute Symptoms

Consider obstruction, volvulus, incarceration or ischemia.

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Frequently Asked Questions

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What is GERD?
GERD is gastroesophageal reflux disease caused by reflux of gastric contents into the esophagus producing troublesome symptoms and/or complications.
What is the most common type of hiatal hernia?
Type I, or sliding hiatal hernia, is the common sliding form in which the GE junction moves above the diaphragmatic hiatus.
What is a paraesophageal hernia?
It is a hiatal hernia in which part of the stomach herniates alongside the esophagus; Types II–IV are classified as paraesophageal patterns.
What is the role of fundoplication?
Fundoplication reinforces the gastroesophageal antireflux barrier and may be performed with hiatal hernia repair in selected patients.
Is mesh routinely required for hiatal hernia repair?
Current evidence is insufficient to support a universal recommendation for or against routine mesh use.
What is the role of manometry before antireflux surgery?
It evaluates esophageal motility and LES function and helps identify motility disorders that may influence operative planning.

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